Liquid dispersants for pesticides

ABSTRACT

Dispersant pesticide compositions which comprise a pesticide and a salt or partial salt of an alkyl substituted amine and a phosphonic acid.

This invention is concerned with compositions suitable for dispersingpesticides in water and compositions containing both a dispersant and apesticide. In addition, it is concerned with compositions which preventcorrosion in the mild steel systems in which the water dilutions ofpesticides are used or dispersed. More particularly, it pertains tocompositions comprising salts or partial salts of (a) alkyl aminesand/or dialkyl amines and (b) phosphonic acids, plus a water-dispersiblesolvent, optionally an emulsifier and a compatible pesticide. It iswithin the scope of the present invention to include additionalcomponents for specific purposes.

It is known to those skilled in this art that industrial biocidesperform better if they are well dispersed in the water in which they areused or applied. It is also known that smaller particles of pesticidesgive better coverage and better prevent the entrance of pests intotreated articles. It is desirable for many uses to produce a truesolution of the pesticide which gives molecular size distribution.

I have found that it is possible to produce molecular dispersions inwater dilutions of many water-insoluble pesticides by formulating themwith the dispersant compositions of the present invention. I have alsofound that these molecular dispersions provide unexpectedly good levelsof pesticidal activity and that the solutions are non-corrosive to mildsteel.

My dispersant composition is formed by combining the followingingredients:

    ______________________________________                                        Solvent (water dispersible)                                                                          10-50 parts by wt                                      Commercial Liquid Phosphonic Acid                                                                    10-40 parts by wt                                      alky or dialkyl amines 20-60 parts by wt                                      emulsifier (optional)  5-25 parts by wt                                       ______________________________________                                    

Water-dispersible solvents which I have found suitable for producingcompositions in accordance with this invention comprise, but are notlimited to, alcohols, glycols, and glycol ethers. The water-dispersiblesolvent may also consist partly or totally of water itself.

Commercial liquid phosphonic acids which I have found useful for thecompositions of this invention comprise, but are not limited to, thefollowing:

Phosphonic acid, {nitrolotris (methylene)} tris

Phosphonic acid,

{{{bis{2-bis(phosphonomethyl)amino}ethyl}amino}-methyle

Phosphonic acid, (1-hydroxyethylidene)bis-

Polyhexylene polyamino polymethylene phosphonic acid

Alkyl and dialkyl amines I have found useful for compositions of thisinvention comprise, but are not limited to, dodecyl dimethylamine,didecyl methyl amine, dodecyl amine, decyl dimethyl amine, cocodimethylamine, N, N-dimethylcocoamine, cocoalkyldimethylamines and dicoco methylamine.

Emulsifiers or surfactants that I have found useful for compositions ofthis invention comprise, but are not limited to cocodimethyl ammoniumchloride, didecyl dimethyl ammonium chloride, alkyl benzyl dimethylammonium chlorides, and alkylphenol ethylene oxide adducts. Emulsifiersor surfactants make a better product, but since they are not absolutelyessential, I consider that they are optional ingredients.

Pesticides which I have found useful when dispersed by compositions ofthe present invention comprise, but are not limited to, commercialcompositions of polyphase, azaconazole, 2,5-dichloro 2n-octyl-3-isothiazoline,and Tebuconazole. Useful ranges of pesticidesformulated with compositions of the current invention are from about 1to about 20 parts by weight per 100 parts by weight of the composition.

Dispersant compositions of the present invention formulated withpesticides were used for treating wood, textiles, paper, tile, brick,concrete and leather. Treating dilutions in water of from 0.1% to 10%according to the generalized formula gave control of biological growthson the treated articles which were as good or better than that offeredby commercially accepted products at similar use dilutions. Compositionsof the present invention with the above mentioned pesticides were alsotested to determine control of algal, fungal, and bacterial slimes inwater. At treating levels from 0.1% to 1%,all slimes were controlled.All of the compositions were tested at 1% in water and found to benon-corrosive to mild steel.

My dispersant composition may be combined with a pesticide in a numberof different ways. For instance, the dispersant composition can be mixedwith water (e.g. 100 parts of water per one part of dispersantcomposition) and then combined with 0.1-1.0 part of the pesticideformulation. The combination then may be further diluted with water, thedegree of dilution depending upon the particular situation to betreated. This is largely a matter of routine testing that those workingin this art can readily carry out in order to obtain optimum results.

The following examples illustrate some specific formulations that wereprepared in accordance with my invention.

EXAMPLE I

    ______________________________________                                        Ingredients           Parts by Weight                                         ______________________________________                                        Propylene Glycol, methyl ether                                                                      25 parts                                                Monsanto Dequest 2010 (phosphonic acid)                                                             15 parts                                                Ethyl ADMA 12 (amine) 45 parts                                                GAF Igepal CO-530 (emulsifier)                                                                      10 parts                                                Troy Polyphase AF-1 (pesticide)                                                                     15 parts                                                ______________________________________                                    

EXAMPLE II

    ______________________________________                                        Ingredients            Parts by Weight                                        ______________________________________                                        Ethanol, denatured     30 parts                                               Lonza Unihib 1704 (phosphonic acid)                                                                  10 parts                                               Ethyl DAMA 1010 (amine)                                                                              40 parts                                               Stepan BTC 1010 (emulsifier)                                                                         15 parts                                               Rohm and Haas Kathon 930 (pesticide)                                                                  5 parts                                               ______________________________________                                    

EXAMPLE III

    ______________________________________                                        Ingredients           Parts by Weight                                         ______________________________________                                        Propylene Glycol      25 parts                                                Monsanto Dequest 2010 (phosphonic acid)                                                             20 parts                                                Ethyl ADMA 10 (amine) 40 parts                                                Igelpal CO-630 (emulsifier)                                                                         10 parts                                                Bayer AG Tebuconazole (pesticide)                                                                    5 parts                                                ______________________________________                                    

EXAMPLE IV

    ______________________________________                                        Ingredients            Parts by Weight                                        ______________________________________                                        Propylene Glycol, Methyl Ether                                                                       15 parts                                               Albricht and Wilson Briquest 301-50-A                                                                15 parts                                               (phosphonic acid)                                                             Ethyl ADMA-12 (amine)  45 parts                                               GAF Igepal CO-530 (emulsifier)                                                                       10 parts                                               Troy Polyphase AF-1 (pesticide)                                                                      15 parts                                               ______________________________________                                    

EXAMPLE V

    ______________________________________                                        Ingredients           Parts by Weight                                         ______________________________________                                        Propylene Glycol, methyl ether                                                                      10 parts                                                Monsanto Dequest 2010 (phosphonic acid)                                                             15 parts                                                N,N-dimethylcocoamine 45 parts                                                GAF Igepal CO-530 (emulsifier)                                                                      15 parts                                                Troy Polyphase AF-1 (pesticide)                                                                     15 parts                                                ______________________________________                                    

In the above examples the ingredients identified by trademarks arebelieved to have the following chemical constitution

Bayer AG Tebuconazole isa-{2-(4-chlorophenyl)ethyl}-a-(1,1-dimethylethyl)-1H-1,2,4-triazole-1-ethanol.

Monsanto Dequest 2010 is Phosphonic acid, (1hydroxyethylidene) bis (60%in water).

GAF Igepal CO-530 is Poly (oxy-1,2-Ethandiyl), Alpha(Nonylphenyl)-Omega-Hydroxy.

Ethyl ADMA-12 is dodecyldimethylamine.

Lonza Unihib 1704 is Polyhexylene Polyamino polymethylene phosphonicacid (45% in water).

Ethyl DAMA-1010 is didecylmethylamine.

Stephan BTC-1010 is 50% didecyl dimethyl ammonium chloride inwater-alcohol solvent.

Rohm-Haas Kathon 930 is 30% 4,5-Dichloro-2-n-octyl-3-isothiazoline inxylene.

Igepal CO-630 is Nonylphenoxypoly (Ethylene-oxy) Ethanol-9EO.

Ethyl ADMA 10 is decyldimethylamine.

Briquest 301-50-A is Phosphonic acid, {nitrilotiris (methylene} tris.

Troy Polyphase AF-1 is 40% 3-iodo-2-Propynyl Butyl Carbamate with 25%Hi-Flash aromatic naphtha, 15% dipropylene glycol, and 15% DMSO(Dimethyl sulfoxide).

As a further example the following pesticide formulation was prepared

    ______________________________________                                        3-Iodo-2-Propynyl Butyl Carbamate                                                                   40% by wt                                               Hi-Flash Aromatic Naphtha                                                                           25% by wt                                               Dipropylene Glycol    15% by wt                                               DMSO (Dimethyl Sulfoxide)                                                                           15% by wt                                               ______________________________________                                    

and also a dispersant composition that included

    ______________________________________                                        Propylene Glycol, methyl ether                                                                        30% by wt                                             Phosphonic Acid (1-hydroxyethylidene)bis                                                              15% by wt                                             (60% in water)                                                                Dodecyldimethyl amine   45% by wt                                             Poly (oxy-1,2-Ethanediyl), Alpha-                                                                     10% by wt                                             (Nonylphenyl)-Omega-Hydroxy                                                   ______________________________________                                    

One part of the dispersant composition was added to 100 parts water,then one tenth of one part of the liquid pesticide formulation wasadded. When tested for control of sapstain on freshly cut lumber, thisformulation gave better control than commercial products.

It will be apparent to those skilled in the art that many differentformulation combinations must be tested to find one with optimumphysical and efficacy properties. With the information given in thisdisclosure, the skilled chemist will be able to develop formulations ofdispersant compositions and compatible pesticides with optimum physicaland biological properties for a particular application.

I claim:
 1. A dispersant pesticide composition which comprises(1) a saltor partial salt of the reaction product of(a) an alkyl substituted amineand (b) a phosphonic acid, and(2) a pesticide.
 2. A dispersant pesticidecomposition according to claim 1 wherein said alkyl substituted amine isselected from the group consisting of dodecyldimethylamine,didecylmethylamine, dodecylamine, decyldimethylamine,N,N-dimethylcoamine, cocoalkyldimethylamine and diccocomethylamine.
 3. Adispersant pesticide composition according to claim 1 wherein said amineis N,N-dimethylcocoamine.
 4. A dispersant pesticide compositionaccording to claim 1 wherein said phosphonic acid is phosphonic acid,(1-hydroxyethylidene)bis-.
 5. A dispersant pesticide compositionaccording to claim 4 wherein said amine is N,N-dimethylcocoamine.
 6. Adispersant pesticide composition according to claim 2 wherein thephosphonic acid is phosphonic acid, (1-hydroxyethylidene)bis-.
 7. Adispersant pesticide composition according to claim 1 wherein said amineis didecylmethylamine.
 8. A dispersant pesticide composition accordingto claim 1 wherein said amine is dodecyldimethylamine.
 9. A dispersantpesticide composition according to claim 1 wherein said amine isdecyldimethylamine.
 10. A dispersant pesticide composition which isformed by combining

    ______________________________________                                        Propylene Glycol, methyl ether 10 parts                                       Phosphonic acid, (1-hydroxyethyldidene)bis                                                                   15 parts                                       N,N-dimethylcocoamine          45 parts                                       Poly(oxy-1,2-ethandiyl), alpha(nonylphenyl)-                                                                 15 parts                                       omega-hydroxy                                                                 40% 3-iodo-2-propynl butyl carbamate                                          25% hi-flush aromatic naphtha                                                 15% dipropylene glycol, and    15 parts                                       15% dimethyl sulfoxide                                                        ______________________________________                                    